Direct handling of sharp interfacial energy for microstructural evolution

Journal Article · Sun Aug 24 00:00:00 EDT 2014 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2014.07.018· OSTI ID:1143251

Hernández–Rivera, Efraín ^[1]; Tikare, Veena ^[2]; Noirot, Laurence ^[3]; Wang, Lumin ^[4]

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1. Univ. of Michigan, Ann Arbor, MI (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. Saint-Paul lez Durance, Provence-Alpes-Cote-d'Azur (France)
4. Univ. of Michigan, Ann Arbor, MI (United States)

In this study, we introduce a simplification to the previously demonstrated hybrid Potts–phase field (hPPF), which relates interfacial energies to microstructural sharp interfaces. The model defines interfacial energy by a Potts-like discrete interface approach of counting unlike neighbors, which we use to compute local curvature. The model is compared to the hPPF by studying interfacial characteristics and grain growth behavior. The models give virtually identical results, while the new model allows the simulator more direct control of interfacial energy.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1143251
• Alternate ID(s): OSTI ID: 1556688; OSTI ID: 1494436
• Report Number(s): SAND--2014-2973J; PII: S1359646214003108
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: C Vol. 92; ISSN 1359-6462
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Cahn-Hilliard
Monte Carlo
curvature driven flux
sharp interface